.left-ruler {
    position: absolute;
    top: 20px;
    left: 0px;
    width: 20px;
    height: 100%;
    border-right: 1px solid #a1a1a1;
    display: flex;
    flex-direction: column;
    z-index: 10;
    background-color: #787878;
}
.hundred-mark-left {
    flex-direction: column;
    width: 20px;
    height: 100px;
    display: flex;
    border-left: 0 none;
    border-top: 1px solid #a1a1a1;
    left: 0;
    font-size: 10px;
    .mark-num {
        right: 0px;
        display: inline-block;
        width: 10px;
        line-height: 11px;
        position: absolute;
    }
    .s-mark {
        height: 10px;
        left: 0;
        border-left: 0 none;
        border-top: 1px solid #a1a1a1;
        line-break: all;
    }
}
